Just wanted to make some more people aware that after a long break lifting heavy weights after vivid not too push too hard when going back to the gym. Sounds obvious yeah, but you also want to get your body back as big and strong as it was asap. Anyway. I spent less than 2 hours on a back workout. I had done 45 mins chest days before. This time was more intense but way less weight than I was used to just 6 months ago. Had only done bits of CV and very light weights in covid time. So the night after I noticed my piss went dark brown like cola. Same in the morning and sure enough I was taken to hospital with Rhabdo. My creatine kinase level was 49,000 - normal is meant to be 100 but severe cases can go to 200,000. It can cause kidney failure and permanent damage. Just thought I'd better let people know to take it easy as there might be a few cases as the gyms open up in places. There was someone at the hospital the day before me with the same thing. And this has slowed me right down.